it depends, I don't play the ruy lopez with white so it would be easy for me to get worse but if it's part of my repertoire obviously I know how to play for the win but against a very strong player I would repeat at least once to see what they are going to do. Not everyone is like you, most people would jump at the opportunity to force a draw against Magnus or anyone that is going to give them rating for a draw
It's just a lame way of playing because it's anti-fun. You just play a game online like "ok, I'll force a known draw", very lame. Even against Magnus, it's a known draw so there's nothing to be gained or learned from it.
I would only force a draw if it was from a totally losing position, not when the position is still good for white. It doesn't matter if it's against Magnus Carlsen or whoever.
it depends, I don't play the ruy lopez with white so it would be easy for me to get worse but if it's part of my repertoire obviously I know how to play for the win but against a very strong player I would repeat at least once to see what they are going to do. Not everyone is like you, most people would jump at the opportunity to force a draw against Magnus or anyone that is going to give them rating for a draw